Mmm. There's also Ophiuchus - divided in three. Uroboros, Caduceus, and Uraeus. Parrot used to be on Cetus - but he's on Uraeus now. Ophiuchus enforces the rules, but Cetus hasn't had many problems with them. I'm not sure about Orion.
... In fact, I'm not sure about whether Orion has problems with any one team, you should ask your teammates for that. Orion's been here much longer than us.